可可西里马兰冰川冰芯中Cd和Pb的浓度  

THE CONCENTRATIONS OF Cd AND Pb IN ICE CORE FROM MALAN GLACIER,QINGHAI

作　　者：李月芳[1] 姚檀栋[1] 王宁连 李凤霞[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所,冰芯与寒区环境研究开放实验室,兰州730000

出　　处：《环境化学》2002年第2期194-196,共3页Environmental Chemistry

基　　金：国家自然科学基金 4 980 1 0 0 4 ;国家重点基础研究发展规划G1 9980 4 0 80 0 ;中国科学院知识创新 (KZCX1 1 0 0 2 )资助项目

摘　　要：对可可西里马兰冰川冰芯利用ElementICP MS测定了其中Cd和Pb的浓度 .样品中Cd的浓度 ,除了四个样品未检出外 ,其余样品的浓度在 0 399— 1 4 735ng·l- 1之间 ,平均值为 4 6ng·l- 1.Pb的浓度在 8 9— 5 1ng·l- 1之间 ,平均值为 2 0ng·l- 1.Cd和Pb在深度上没有明显的变化趋势 ,Cd和Pb的浓度基本上代表了该地区雪冰中的背景值 .The concentrations of Cd and Pb of a 2.2m depth ice core from the Malan glacier,drilled in 1999 in Qinghai,were determined using element ICP-MS.The concentrations of the two heavey elements decrease in the radius of the ice core indicate the non-contamination part of the ice core were obtained.The concentrations of Cd are in the range of 0.339-14.735ng·l -1,except four samples that the concentrations are too low to determined,and the mean value is 4.6ng·l -1,lower than in the Guliya ice core,in the northwest part of the Tibet plateau.The Pb concentrations are in the range of 8.9-51ng·l -1,and the mean value is 20ng·l -1,lower than in the Dasuopu icecore,in the southern part of Tibet plateau.No obvious change trends of concentrations are founded for the two metals.The concentrations of Cd and Pb may present the background value for the two metals in Qinghai Tibet plateau.

关 键 词：马兰冰川 浓度 CD PB 冰芯 可可西里 镉 铅 大气监测 

分 类 号：X51[环境科学与工程—环境工程]